 class ListNode {
     int val;
     ListNode next;

     ListNode() {

     }
     ListNode(int val) {
         this.val = val;
     }
    ListNode(int val, ListNode next) {
         this.val = val;
         this.next = next; }
 }

 public class Solution {
    public static void main(String[] args) {
     System.out.println("1009");
 }
}



